Picks up the same articles several times

I plugged it in, set up the plugin, it works fine. :) However, there is one annoying problem: the same article is repeatedly removed The page where I use it: https://sztarlimonade.hu (at the bottom) the page where the feed comes from: https://vgm.hu/feed "Update Post If It Is Already Posted" is turned on. The timer is set to 6 hours (but every 6 hours the articles are not always updated on the source page). How can I make it so that only the new articles are read, so the latest 4 always appear?